How Much Do Spark Plugs Cost?
Nothing lasts forever, and so do spark plugs even those long-life 100,000-mile ones. This is why you have to know when it is time to have them replaced, or else, you will suffer the consequences of your negligence. Maybe right now, you are asking yourself “how much do spark plugs cost?”
But before making a purchase, you need to know first a few things about spark plugs replacement.
In the past, drivers would not notice the slow decline in ignition performance until it reached a point where it caused the engine to run rough, created a steady miss, or made it hard to start. Today, 1996 and newer vehicle models come equipped with an OBD II onboard diagnostic system that monitors ignition misfires. When the misfire rate surpasses a certain limit and causes emissions to increase 50 percent over baseline levels, a warning light is illuminated. Older vehicle models do not have this watchdog system. Thus, replacing their spark plugs at the recommended service intervals for preventive maintenance is important to reduce the risk of misfires and maintain optimal engine performance. For traditional spark plugs, the service interval is usually every 45,000 miles while for platinum spark plugs, it is 100,000 miles.